Q. In measurements using CRO, Lissajous patterns are used to

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Q. A dynamometer wattmeter is suitable for both dc and ac.

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Q. If Ey is the voltage applied to Y plates, the vertical deflection of beam is proportional to

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Q. The method of frequency compensation in moving iron voltmeter is

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Q. A moving iron instrument has

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Q. The temperature coefficient of resistance for a thermistor is

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Q. To measure an unknown ac voltage by an ac potentiometer it is desirable that supply for the potentiometer is taken

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Q. A linear displacement digital transducer generally uses

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Q. Two wattmeter method for 3 phase power measurement can be used only for

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Q. A coil resonates at 1 MHz with a resonating capacitance of 72 pF. At 500 pF, resonance is obtained with a resonating capacitor of 360 pF. The self capacitance of coil is

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Q. A peak responding ac voltmeter using a half wave rectifier has been calibrated to read 1 V for 1 V rms sine wave input. If input is 1 V dc the reading will be

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Q. For measuring inductance with high Q, we should use

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Q. A resistance strain gauge has a resistance of about

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Q. Crompton potentiometer has

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Q. Assertion (A): For best results the system of a D'Arsonval galvanometer should be slightly under damped.

Reason (R): Degree of damping affects the time taken by the instrument to come to final position.

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Q. Assertion (A): An RTD uses platinum coil.

Reason (R): Platinum is a very stable material.

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Q. Which of the following, is not a piezoelectric material?

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Q. Harmonic distortion analyser

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Q. An electrostatic voltmeter is suitable for

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Q. The flow rate of electrically conducting liquid without any suspended particle can not be measured by

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